Door lock



15, 1939- J. R. ELLIOTT ET AL v DOOR LOCK Filed April 12, 1934 4Sheets-Sheetl Inventors [1 I/flo C, C. flaw Jory J. R. E LLIOfT El AL,169,944

- Aug. 15, 1939.

DOOR LOCK Filed April 12, 1934 4 sheets-sheet 2 i lu Inventors; 17:12.E///'0# G. C. Hug/mm J. R. ELLIOTT ET AL DOOR Lock Filed April 12, 19344 Sheets-Sheet 3 6. G. Haida/7 Aug. 15, 1939. J. R."ELLIOTT ET AL DOORLOCK 'Filed April 12, 1934 4 Sheets-Sheet 4 lnvenlor:

JTZZEM I (I. HAM/L900 fimm izm f1 uomey Patented Aug. 15, 1939 T OFFIEDOOR LOCK John It. Elliott and Charles 0. Hudson, Atlanta, Ga.

Application April 12, 1934, Serial No. 720,335

12 Claims.

. This invention relates to door locks and has as its object theprovision of an improved and efficient door lock whereby the door may belocked or released from either side thereof, and also 5 to be opened orclosed from either side thereof.

, The invention together with its objects and advantages will be bestunderstood from a study of the following description taken in connectionwith the accompanying drawings wherein:

10 I Figure 1 is an enlarged elevational View of the lock embodying thefeatures of, the present invention.

Figure 2 is an enlarged sectional view through the door illustrating theapplication of the in vention with the parts in a door locking position.Figure 3 is a view similar to Figure 2 with the parts in a releasedposition.

, Figure 4 is an enlarged elevational view showing the mounting for thebolt and other features hereinafter more fully referred to.

Figure 5 is a sectional view taken substantially on the line 5-5 ofFigure 1.

Figure 6 is a longitudinal sectional view through a portion of thelocking bolt.

Figure 7 is a perspective view of the lock bolt and Figure 8 is aperspective view of a retaining dog.

Referring to the drawings by reference numerals l indicates generally aportion of a door the front face of which is indicated by the referencenumeral H, and the rear face by the reference numeral H2. The door has aportion thereof hollowed out to accommodate the lock. Suitably securedto the cloor at the front face, H thereof is a plate I3 provided with arecess E4 to accommodate the handle 85. In accordance with the inventionthe handle 95 is secured at one end to a cylinder l6 that is movablethrough a suitable opening provided therefor in the plate [3. The barrelI6 is suitably provided to receive a suitable key for releasing the boltll of the lock. Bolt I! of the lock operates within a tube l8 rotatablysupported 'at one end as indicated generally at l9, and as best shown inFigure 6. The barrel I6 is normally urged outwardly to the positionshown in Figure 3 through the medium of a coil spring 20 housed withinthe tube l3.

To look the barrel It in the position shown in 9 Figure 2 there isprovided a pivotally mounted dogZl that is adapted to engage in a notch22 provided in that end of the bolt I? which, when the cylinder l6 andhandle 15 are in the position shown in Figure 2 projects beyond therotatably mounted end of the tube I 8 and through an opening provided ina suitable partition plate 23 to be engaged by the dog 2! in a mannerclearly shown in Figure 1. The dog 2| is pivotally mounted to the plate23 at the side thereof opposite to the tube 3.

There is also provided a latch bolt 24, the same having a head whichoperates through a suitable opening provided in a flange on plate 23 assuggested in Figure 4. The bolt 24 is guided in its movement through themedium of a pin and slot means 25. The bolt 24 is normally urged to aprojected position through the medium of a suitable coil spring 26 oneend of which is suitably anchored to the plate 23, and the other end ofwhich bears against a lug 27' projecting laterally from the latch bolt24.

Connected with the inner end of the barrel I6 through the medium of aclamp 29 is one end of a flexible element or chain 21 that is trainedover a pulley 28 suitably mounted on the plate 23, the other end of thechain 27 being connected with a pin 30 that operates in a slot 3!provided in an extension of plate 23. The pin 39 serves to connect saidlast named end of the chain 2'! with one end of a curved lever 32, theother end of which lever is pivotally connected with a member 33 that isrotatably mounted upon a spindle 34. The spindle 34 extends through andis journalled in a bearing 35 provided on a plate 36, and the member 33is adapted to rotate about the spindle as an axis. On one end of thespindle there is fixed a knob 37 while on a relatively opposite end ofthe spindle there is fixed an arm 39 that is connected through themedium of a pin 40 with one end of a link 42. The other end of the link42 is provided with a slot 43 in which operates a headed stud or pin 44carried by the latch bolt 24 at the end of the bolt opposite to the headthereof. Pivoted to the bolt 24 through the medium of the stud 44 is oneend of a trip link 45. The link 45 has a free end formed as at46 tostraddle the angular end 2 Id of the pivoted dog 2|. Also secured to theend 2la' of the dog 2! is one end of a suitably anchored spring 41 thatnormally urges the dog 2| to rotate in a direction to engage the notch22 in the lock bolt l'l, all of which will be clear from a study ofFigures 1, 5 and 8.

As also suggested in Figures 1 and 5, the pin 4D that connects the arm39 with the link 42 operates in an arcuate slot 4| provided in the upperportion of the member 33 so that when the arm 39 is rotated far enoughto engage the pin 46 with one end of the slot 4i movement of said arm 39will be transmitted to the member 33 as and for the purpose hereinaftermade manifest.

There is also provided a suitable spring 38 anchored at one end to theplate 36 and connected at an opposite end to the end of the link 32pivotally connected with the member 33, the spring 38 acting inopposition to the spring 2|! to hold the chain 21 taut.

The operation and utility of the device will be apparent from thefollowing:

With the parts in the position shown in Figure 2 it will be apparentthat the bolt is in projected position to secure the door closed andthat to retract the bolt from the outside it will first be necessary tohave the handle I5 in a position externally of the pocket M as forexample in the position shown in Figure 3. To accomplish this, the keyis inserted in the lock in the usual man ner and turned for rotating thelock bolt H. The turning of the bolt I! in this manner will move thenotch 22 thereof out of engagement with the dog 2| with the result thatthe barrel l6 under action of spring will be projected together with thehandle IE to the position shown in Figure 3. Movement of the barrel I6to the projected position will through the medium of the chain 21 drawthe pin from the position shown in Figure 1 and also Figure 4 toward theright hand end of the slot 3| in Figure 4. This in turn will cause themember 33 to rotate in a clockwise direction as viewed in Figure 1, andthe movement of the member 33, through the medium of the pin and slotconnection 40, 4| will be relative to the arm 39. The handle I5 is thenrotated in the proper direction for retracting, through the medium ofthe co-acting parts 49, and 50, the bolt 24, so that the door is nowunlocked and can be easily swung open, as will be presently manifested.

Obviously, by pushing inwardly on the handle IE to move the same fromthe position shown in Figure 3 to the position shown in Figure 2 theparts will return to their normal position permitting the bolt 24 to beprojected under action of spring 26.

If it is desired to move the parts from the position shown in Figure 3to the position shown in Figure 2 from the inside of the automobile, theoperator rotates the knob 31 (assuming the parts are in the projectedposition, that is in the position called for by Figure 3), in acounterclockwise direction. This will result in a pull toward the rightin Figure 1 on the link 32. This pull on the link 32 will draw the chain21 inwardly or to the right in Figure 3 which in turn will cause thebarrel I6 and associated parts to move inwardly from the position shownin Figure 3 to the position shown in Figure 2; and when the bolt I1 isprojected beyond the plate 23 dog 2| under action of spring 41 willswing into engagement with the notch 22 of the bolt thus securing theparts in their inwardly or retracted position.

Now, with the parts in the position shown, as for example, in Figure 2,the bolt 24 may be retracted by one inside of the automobile in thefollowing manner:

The knob 31 is rotated, (as viewed from Figure 1) in a clockwisedirection which will cause the link 42 to move in a correspondingdirection, and this movement of the link will of coursein turn cause thebolt 24 to be retracted. Due to the loose connection between the ends 46and 2|a of the link 45 and dog 2| respectively the retraction of thebolt in this manner may be effected without affecting the lockmechanism, that is, without releasing bolt On the other hand, when it isdesired to unlock the door from the inside of the automobile and topermit the parts to be projected from the position shown in Figure 2 tothe position shown in Figure 3, the knob 31 is rotated in a clockwisedirection sufiiciently far enough that link 45 will so engage the end2|a of the dog 2| as to cause the latter to rotate in acounter-clockwise direction to free the lock boltll. With the lock boltfreed in this manner spring 20 will act on the cylinder It to projectthe latter and associated parts to the position shown in Figure 3.

From the above it will be seen that the bolt 24 may be retracted by oneinside of the automobile with or without afiecting the lock mechanism asmay be found desirable.

At the inner or rotatably mounted end thereof the tube I8 is providedwith a lug 49 as will be clear from a study of Figures 4 and 6. The bolt24 is also provided with an extension 50 that is arranged in the path ofthe lug 49. It will also be understood that the bore of the barrel l6that receives the tube I8 is squared, and that the tube l8 with theexception of the rotatably mounted end thereof is also square in crosssection. Thus a turning of the barrel It will cause the member l8 toturn therewith. Accordingly, with the parts in the position shown inFigure 3, by rotating the handle l5 the member |8 will be rotated sothat the lug 49 thereof will engage the extension 50 of the bolt in amanner to cause a retraction of the bolt 24 against the action of spring26 thus permitting the door to be easily opened by one on the outside bya turning of the handle l5 when the latter is projected outwardly fromits pocket or recess |4.

Having thus described our invention, what we claim as new is:

1. A look for doors and the like comprising a slidably mounted bolt,inner and outer telescopic members nonrotatively connected together,interengaging means on one of said members and the bolt for retractingthe latter, an operating handle provided on the free end of the other ofsaid telescopic members, a handle pivotally mounted at the inner side ofthe door, means for extending said telescopic members, and flexiblemeans connecting said other of the telescopic members and the secondnamed handle for telescoping said members.

2. A look for doors and the like comprising a slidably mounted bolt,inner and outer telescopic members nonrotatably connected together,interengaging means on one of said members and the bolt for retractingthe latter, an operating handle provided on the free end of the other ofsaid telescopic members, a handle pivotally mounted at the inner side ofthe door, means for extending said telescopic members, and flexiblemeans connecting said other of the telescopic members and the secondnamed handle for telescoping said members, a key operated bolt carriedby said other telescopic member and having a free end provided with anotch, a pivoted dog arranged to engage the notch in the bolt forsecuring the members in telescoped position, operative connectionbetween the second named handle and the bolt for retracting the latterindependently of the first named handle, and said connection alsoincluding a connection between the second named handle and the dog forreleasing the key controlled bolt.

3. A look for doors of motor cars and the like comprising inner andouter telescopic members non-rotatably connected together, one of saidmembers adapted to operatively engage a lock bolt to retract it, theother having an operating handle, a spring for extending said members,means at one side of the lock operatively connected with the outertelescopic member for telescoping said members, including a pivotallymounted handle, a flexible member connected at one end with said outertelescopic member, and

a link connecting said flexible member with the handle.

4. In a lock for the doors of motor cars and the like, inner and outertelescopic members nonrotatably connected together, one of said, membersadapted to operatively engage a lock bolt to retract it, the otherhaving an operating handle, a spring for extending said members, meansengaged with said members to holdthem in telescopic position, means fordisengaging said engaging means whereby the spring returns the membersto extended position, and means for telescoping said members against theaction of said spring including a flexible element connected at one endwith the handle equipped telescopic member, guide means for saidflexible member, and operating means connected with the flexible memberfor drawing the outertelescopic member inwardly into telescopingposition relative to the inner telescopic member, said operating meansbeing accessible from the side of the lock remote from the handle.

5. A look for doors of motor cars and the like including a springprojected bolt, inner and outer telescopic members non-rotatablyconnected together, one of said members adapted to engage the bolt toretract it, and the other having an operating handle, a spring forextending said members, means engaging said members to hold them intelescoped position, said means including a key operated bolt carried bythe handle equipped telescopic member, said key operated bolt beingprovided with a notch adjacent the free end thereof, a pivoted dogarranged to engage the notch to hold the members in telescoped position,and said key operated bolt being turnable by a key to disengage the saidbolt and dog whereby the spring returns the members to extendedposition.

6. In a lock for doors of motor cars, and the like, a spring projectedbolt, inner and outer telescopic members non-rotatably connectedtogether, one of said members adapted to engage the bolt to retract it,the other member having an operating handle, a spring for extending saidmembers, means for engaging said members to hold them in telescopedposition including a notched member carried by the outer telescopicmember and a pivoted dog to engage the notch of said notched member tohold the telescopic members in telescoped position, and an operatingconnection between the bolt and said dog for moving the latter out ofengagement with the notch whereby the spring returns the telescopicmembers to extended position.

7. A look for doors of motor cars and the like comprising a normallyspring projected bolt, guide and supporting means for the bolt, meansfor retracting the bolt including inner and outer telescopic membersnon-rotatably connected together, one of said members adapted tooperatively engage the bolt to retract it, the other I having anoperating handle, means for extending said members, means for holdingsaid members in telescoped position, handle means accessible from theside of the door remote from said inner and outer telescopic members,means for releasing said telescoping members from telescoped positionincidental to a retraction of the bolt, and means operatively connectingthe second named handle means with the outer telescopic member formoving said member into telescoped position.

8. A door lock having a latch bolt, an outer and an inner handle, saidouter handle being adapted for movement axially into operative andinoperative position, spring means for urging said handle into operativeposition, said latch bolt being adapted for withdrawal by both handles,said inner handle being adapted when moved from a given point in onedirection to release the outer handle from inoperative position tooperative position and to withdraw the latch bolt, and when moved fromthe given point in the opposite direction to withdraw the outer handlefrom the operative to inoperative position,

9. A door lock having a latch bolt, an outer and an inner handle, saidouter handle having a telescopic spindle and being adapted for movementinto operative and inoperative position, a cam on the outer handlespindle engageable with the latch bolt, a bell crank connected to theinner handle, a slide bar connected to the latch bolt,

and a second slide bar connecting the bell crank u and the outer handlespindle, said bell crank being capable of selectively engaging each ofthe slide bars whereby a movement of the inner handle in one directionwithdraws the latch bolt and a movement of said inner handle in theopposite direction telescopes the spindle and draws the outer handleinto inoperative position.

19. In a lock mechanism for a door having a depression formed in oneside face thereof, said lock mechanism comprising a handle operativelyconnected to the lock mechanism, said handle having a shank slidablyprojecting through an aperture in said door face to permit the handle tobe moved between a projected position and a retracted position occupyingsaid depression, a second handle mounted on the other side of the doorfor movement in opposite directions from a normal position, meansconnecting the second handle to the locking mechanism to effectoperation of said mechanism by movement of the handle in one direction,and means for effecting movement of the first handle between said twopositions controlled by movement of the second handle in the oppositedirection.

11. In a lock mechanism for a door having a depression formed in oneside face thereof, said lock mechanism comprising a handle operativelyconnected to the lock mechanism, said handle having a shank slidablyprojecting through an aperture in said door face to permit the handle tobe moved between a projected position and a retracted position occupyingsaid depression, spring means for projecting the handle, and meanscontrolled from a remote point located out of axial alignment with thehandle for retracting the handle into said depression and retaining ittherein.

12. In a lock mechanism for a door having a depression formed in oneside face thereof, said lock mechanism comprising a handle operativeltconnected to the lock mechanism, said handle having a shank slidablyprojecting through an aperture in said door face to permit the handle tobe moved between a projected position and a retracted position occupyingsaid depression, spring means for projecting the handle, a second handlerotatably mounted on the other side of the door, and a link and leversystem connecting said handles to cause rotation of said second handleto effect retraction of the first handle into the depression.

JOHN R. ELLIOTT. CHARLES C. HUDSON.

